Hi, How much time does it take to move a Passive node to Active in CCR, Exchange 2007 using Power Shell...as, I want to calculate the downtime & plan the activity; Thanks, AJ

Hi AJ768, it depends particularly on your network latency. As soon as the lacking logs are transferred to the passive node and then applied to its database, the passive node starts mounting the cluster ressources. In a scenario with a latency of 50 ms or less (comp. LAN-like), you can calculate a downtime of less than 3 minutes. This statement is NOT universally valid but a realistic value to orientate yourself. The actual downtime depends on your specific environment and should be tested e.g. by conducting a guided handoff. Regards, MarkusMCSE:Messaging

Hi AJ768, it depends particularly on your network latency. As soon as the lacking logs are transferred to the passive node and then applied to its database, the passive node starts mounting the cluster ressources. In a scenario with a latency of 50 ms or less (comp. LAN-like), you can calculate a downtime of less than 3 minutes. This statement is NOT universally valid but a realistic value to orientate yourself. The actual downtime depends on your specific environment and should be tested e.g. by conducting a guided handoff. Regards, MarkusMCSE:Messaging

Thanks :-)

Agree with the above, normally well with 5 minutes, so you can set your RTO to 5 mins which Exch 2007 can easily meet. (CCR).Sukh

Hi AJ768 Any further question relate to this issue, if it is ok, Please Mark As Answer and Finish this thread CheersZi Feng TechNet Community Support